Other than the plastic clips integrated into the fan's frame, there is nothing holding it on to the cooler. This design works well, but makes replacing the fan difficult (if you should need/want to). Minimal effort is needed to pop the fan on or off of the aluminum cooling fins, but you do need to work carefully, as I managed to bend a handful of fins while re-installing it.
The above right image shows the fan's power lead. There is a standard 3-pin power cable, and a branched off lead that ends with a small potentiometer for fan speed control. Having a fan controller is a nice addition, but having it on such a short lead means you will have to open your case for adjustments. Even if they decided against including a 3.5" bay or PCI slot bracket, making the lead long enough to reach outside the case would have been nice.
The next set of images show the underside of the cooler. There are six sets of somewhat u-shaped copper heatpipes that lead up to the fins. These twelve pipe ends all enter the fins on one side, and travel the whole width of the cooler, providing plenty of surface for heat transfer. The base of the cooler is also copper, and even though these images don't do it justice, it is very well finished. Very smooth, flat, and just about a perfect mirror.
In the final set of images we see the BigTyp 14 Pro without the fan attached. There are actually two sets of aluminum fins, each with two rows of three heatpipes passing through. One idea for improvement might be to stagger the two rows so that they aren't directly on top of each other.
Seeing the cooler without the big 14cm fan gives me an idea that will be checked out later in the review. While it is shorter than most tower coolers anyway, minus the fan it is very compact. Attaching a fan to the underside of the aluminum fins might be a useful modification that could let this thing fit into some very slim cases.